cpufreq: Init cpufreq only for present CPUs

for_each_possible_cpu() is currently used to initialize cpufreq.
However, in cpu_dev_register_generic(), for_each_present_cpu()
is used to register CPU devices which means the CPU devices are
only registered for present CPUs and not all possible CPUs.

With nosmp or maxcpus=0, only the boot CPU is present, lead
to the cpufreq probe failure or defer probe due to no cpu device
available for not present CPUs.

Change for_each_possible_cpu() to for_each_present_cpu() in the
above cpufreq drivers to ensure it only registers cpufreq for
CPUs that are actually present.

Fixes: b0c69e12 ("drivers: base: Use present CPUs in GENERIC_CPU_DEVICES")
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>